The Performance Impact Of Spectre Mitigation On POWER9

The Golang performance saw some small performance setbacks from this mitigation.

Hopefully you found this reference data helpful if you are interested in maximizing the performance of POWER9 and not concerned about Spectre mitigations due to a tightly controlled environment. If you wish to see how your own POWER, ARM, or x86 hardware compares to the POWER9 performance in the varying states with the Talos II, simply install the Phoronix Test Suite and run phoronix-test-suite benchmark 1811098-SK-TALOSIIDU15. For how this Talos II dual 22-core workstation compares to Intel and AMD HEDT systems, see last week's initial benchmark results while additional follow-up tests will be forthcoming.

Additional Spectre POWER9 benchmarks can be found via all of the raw performance data on OpenBenchmarking.org.